A method, device, equipment and medium for monitoring reservoir leakage

Abstract

The present application provides a method, device, equipment and medium for monitoring reservoir leakage. The method includes: obtaining the first reservoir basin terrain characteristic parameters of the upper reservoir and the second reservoir basin terrain characteristic parameters of the lower reservoir of a pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir monitored in real time; based on the first reservoir basin terrain characteristic parameters, the second reservoir basin terrain characteristic parameters, and the water volume change parameters of the upper reservoir and the lower reservoir, calculating the leakage loss parameters corresponding to the upper reservoir, the lower reservoir and the power station system respectively, wherein the power station system is a combined system of the upper reservoir, the lower reservoir and the unit connecting the upper reservoir and the lower reservoir; based on the leakage loss parameters and the baseline leakage loss parameters, determining whether there is abnormal leakage in the pumped storage power station reservoir. The present application can improve the timeliness and accuracy of leakage monitoring of power station reservoirs.

Description

Technical Field

[0001] The present application relates to the technical field of leakage monitoring, and in particular to a method, device, equipment and medium for monitoring reservoir leakage. Background Art

[0002] With the continuous development of science and technology, the application of pumped storage power is becoming more and more extensive. The upper reservoirs of pumped storage power stations are mostly formed by excavation. The groundwater level around the reservoir is generally lower than the normal water storage level of the reservoir. There is not much water supply nearby. After water storage, a huge head difference is formed inside and outside the reservoir. The reservoir water can seep downward through the rock layer at the bottom of the reservoir, combined cracks, steep-angle cracks, etc., and the thin ridges at the underground watershed may also cause them to seep into the adjacent valley after being submerged.

[0003] On the one hand, reservoir leakage means lost electricity, which restricts the economic benefits of pumped-storage power plants. On the other hand, leaking water can also endanger the foundation safety of surrounding buildings and slopes. Once a leakage channel is formed, due to long-term water erosion and scouring, the channel will generally gradually expand, potentially causing larger concentrated leakage and scouring damage, endangering the stability of the reservoir slopes, the mountains on both sides, and existing buildings. Therefore, real-time, rapid, and regular monitoring, identification, and early warning of abnormal leakage during normal reservoir operation are extremely important to ensure the economic and stable operation of power plants.

[0004] Existing reservoir leakage monitoring typically involves deploying piezometers and other equipment within the reservoir basin during construction. However, this monitoring approach is point-based, with equipment typically installed 50-100 meters apart. This sparse density makes comprehensive monitoring of reservoir leakage difficult. Newer detection technologies, such as high-density electrical detection, ground-penetrating radar, and electromagnetic wave detection, are generally used for initial detection of leaking areas after significant leakage has occurred. These technologies are unable to provide real-time monitoring during daily reservoir operations to determine if leakage is occurring. Furthermore, detection signal attenuation is significantly affected by water depth, and conducting a full reservoir survey is both time-consuming and costly. Summary of the Invention

[0005] The embodiments of the present application provide a method, device, electronic device and storage medium for monitoring reservoir leakage to solve the problem in related technologies that the reservoir performs initial detection of the leakage area after a relatively obvious leakage anomaly has occurred, and cannot perform real-time monitoring during the daily operation of the reservoir to determine whether the reservoir has leakage anomalies.

[0006] In order to solve the above technical problems, the embodiments of the present application are implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a method for monitoring reservoir leakage, the method comprising:

[0008] Obtaining topographic characteristic parameters of a first reservoir basin of an upper reservoir and a second reservoir basin of a lower reservoir of a pumped storage power station, as well as water volume change parameters of the upper reservoir and the lower reservoir monitored in real time;

[0009] Based on the terrain characteristic parameters of the first reservoir basin, the terrain characteristic parameters of the second reservoir basin, and the water volume change parameters of the upper reservoir and the lower reservoir, leakage loss parameters corresponding to the upper reservoir, the lower reservoir, and the power station system are calculated, where the power station system is a combination of the upper reservoir, the lower reservoir, and the units connecting the upper reservoir and the lower reservoir;

[0010] Based on the leakage loss parameter and the benchmark leakage loss parameter, it is determined whether there is abnormal leakage in the pumped storage power station reservoir.

[0011] Optionally, the calculation of leakage loss parameters corresponding to the upper reservoir, the lower reservoir, and the power station system, respectively, based on the first reservoir basin topographic characteristic parameters, the second reservoir basin topographic characteristic parameters, and the water volume change parameters of the upper reservoir and the lower reservoir, includes:

[0012] Determine, based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at the monitoring start time and the monitoring end time in the water volume change parameter, a first total water volume parameter of the upper reservoir and the lower reservoir at the monitoring start time, and a second total water volume parameter of the upper reservoir and the lower reservoir at the monitoring end time; wherein the monitoring start time and the monitoring end time are the start time and the end time of a preset monitoring period, respectively;

[0013] Calculating a first leakage loss parameter of the power station system during the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir during the monitoring period;

[0014] Determining a second leakage loss parameter of the upper reservoir during the monitoring period based on a water volume change parameter of the upper reservoir during the monitoring period and a total water volume parameter of the upper reservoir at the monitoring start time and the monitoring end time;

[0015] Based on the water volume change parameter of the lower reservoir during the monitoring period and the total water volume parameter of the lower reservoir at the monitoring start time and the monitoring end time, the third leakage loss parameter of the lower reservoir during the monitoring period is determined.

[0016] Optionally, the water volume change parameters include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters are used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters are parameters of non-power generation water consumption of the upper reservoir and the lower reservoir.

[0017] Optionally, the calculating of a first leakage loss parameter of the power station system during the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir during the monitoring period includes:

[0018] The first leakage loss parameter is calculated based on the following formula (1):

[0019]

[0020] In the above formula (1), is the first leakage loss parameter of the power station system during the monitoring period, is the first total water volume parameter of the upper reservoir and the lower reservoir at the start time of the monitoring, is the first total water volume parameter of the upper reservoir and the lower reservoir at the end of the monitoring, is the evaporation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir and the lower reservoir during the monitoring period, is the precipitation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir and the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0021] Optionally, determining the second leakage loss parameter of the upper reservoir during the monitoring period based on the water volume change parameter of the upper reservoir during the monitoring period and the total water volume parameter of the upper reservoir at the monitoring start time and the monitoring end time includes:

[0022] The second leakage loss parameter is calculated based on the following formula (2):

[0023]

[0024] In the above formula (2), is the second leakage loss parameter of the upper reservoir during the monitoring period, is the total water volume parameter of the upper reservoir at the start of monitoring, is the total water volume parameter of the upper reservoir at the end of monitoring, is the evaporation parameter of the upper reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir during the monitoring period, is the precipitation parameter of the upper reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir during the monitoring period, is the water demand parameter of the power station during the monitoring period. The water demand parameter of the power station during discharge power generation is negative, and the water demand parameter of the power station during pumped storage is positive. i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0025] Optionally, determining the third leakage loss parameter of the lower reservoir within the monitoring period based on the water volume change parameter of the lower reservoir within the monitoring period and the total water volume parameter of the lower reservoir at the monitoring start time and the monitoring end time includes:

[0026] The third leakage loss parameter is calculated based on the following formula (3):

[0027]

[0028] In the above formula (3), is the third leakage loss parameter of the lower reservoir during the monitoring period, is the total water volume parameter of the lower reservoir at the start of monitoring, is the total water volume parameter of the lower reservoir at the end of monitoring, The water demand parameter of the power station during the monitoring period is negative when the power station is discharging water for power generation, and positive when the power station is pumping water for storage. is the precipitation parameter of the lower reservoir during the monitoring period, is the water replenishment parameter of the lower reservoir during the monitoring period, is the evaporation parameter of the lower reservoir during the monitoring period, is the additional water consumption parameter of the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0029] Optionally, the determining whether there is abnormal leakage in the pumped storage power station reservoir based on the leakage loss parameter and the benchmark leakage loss parameter includes:

[0030] performing standardization processing on the first leakage loss parameter, the second leakage loss parameter, and the third leakage loss parameter respectively to obtain corresponding first standard leakage loss parameter, second standard leakage loss parameter, and third standard leakage loss parameter;

[0031] determining whether there is abnormal leakage in the pumped storage power station reservoir based on a magnitude relationship between the first standard leakage loss parameter and a first reference leakage loss parameter corresponding to the power station system; and / or

[0032] determining whether there is abnormal leakage in the upper reservoir of the pumped-storage power station based on a magnitude relationship between the second standard leakage loss parameter and a second benchmark leakage loss parameter corresponding to the upper reservoir; and / or

[0033] Based on the magnitude relationship between the third standard leakage loss parameter and the third reference leakage loss parameter corresponding to the lower reservoir, it is determined whether there is abnormal leakage in the lower reservoir of the pumped storage power station.

[0034] Optionally, after determining whether there is abnormal leakage in the pumped storage power station reservoir based on the leakage loss parameter and the benchmark leakage loss parameter, the method further includes:

[0035] In the event of abnormal leakage in the upper reservoir, outputting abnormal leakage prompt information corresponding to the upper reservoir; and / or

[0036] When there is abnormal leakage in the lower reservoir, outputting abnormal leakage prompt information corresponding to the upper reservoir; and / or

[0037] In the case that abnormal leakage occurs in the power station system, abnormal leakage prompt information corresponding to the power station system is output.

[0038] In a second aspect, an embodiment of the present application provides a reservoir leakage monitoring device, the device comprising:

[0039] A water volume change parameter acquisition module is used to obtain the topographic characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir monitored in real time;

[0040] a leakage loss parameter calculation module, configured to calculate leakage loss parameters corresponding to the upper reservoir, the lower reservoir, and the power station system, respectively, based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameters of the upper reservoir and the lower reservoir, wherein the power station system is a combination of the upper reservoir, the lower reservoir, and a generator set connecting the upper reservoir and the lower reservoir;

[0041] The abnormal leakage phenomenon determination module is used to determine whether there is abnormal leakage in the reservoir of the pumped storage power station based on the leakage loss parameter and the benchmark leakage loss parameter.

[0042] Optionally, the leakage loss parameter calculation module includes:

[0043] a total water volume parameter determination unit, configured to determine a first total water volume parameter of the upper reservoir and the lower reservoir at the monitoring start time and a second total water volume parameter of the upper reservoir and the lower reservoir at the monitoring end time based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at the monitoring start time and the monitoring end time in the water volume change parameter; wherein the monitoring start time and the monitoring end time are the start time and the end time of a preset monitoring period, respectively;

[0044] a first leakage loss calculation unit, configured to calculate a first leakage loss parameter of the power station system during the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir, respectively, during the monitoring period;

[0045] A second leakage loss calculation unit is configured to determine a second leakage loss parameter of the upper reservoir within the monitoring period based on a water volume change parameter of the upper reservoir within the monitoring period and a total water volume parameter of the upper reservoir at the monitoring start time and the monitoring end time;

[0046] The third leakage loss calculation unit is used to determine the third leakage loss parameter of the lower reservoir during the monitoring period based on the water volume change parameter of the lower reservoir during the monitoring period and the total water volume parameter of the lower reservoir at the start time and the end time of the monitoring.

[0047] Optionally, the water volume change parameters include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters are used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters are parameters of non-power generation water consumption of the upper reservoir and the lower reservoir.

[0048] Optionally, the first leakage loss calculation unit includes:

[0049] The first leakage loss parameter is calculated based on the following formula (1):

[0050]

[0051] In the above formula (1), is the first leakage loss parameter of the power station system during the monitoring period, is the first total water volume parameter of the upper reservoir and the lower reservoir at the start time of the monitoring, is the first total water volume parameter of the upper reservoir and the lower reservoir at the end of the monitoring, is the evaporation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir and the lower reservoir during the monitoring period, is the precipitation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir and the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0052] Optionally, the second leakage loss calculation unit includes:

[0053] The second leakage loss parameter is calculated based on the following formula (2):

[0054]

[0055] In the above formula (2), is the second leakage loss parameter of the upper reservoir during the monitoring period, is the total water volume parameter of the upper reservoir at the start of monitoring, is the total water volume parameter of the upper reservoir at the end of monitoring, is the evaporation parameter of the upper reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir during the monitoring period, is the precipitation parameter of the upper reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir during the monitoring period, is the water demand parameter of the power station during the monitoring period. The water demand parameter of the power station during discharge power generation is negative, and the water demand parameter of the power station during pumped storage is positive. i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0056] Optionally, the third leakage loss calculation unit includes:

[0057] The third leakage loss parameter is calculated based on the following formula (3):

[0058]

[0059] In the above formula (3), is the third leakage loss parameter of the lower reservoir during the monitoring period, is the total water volume parameter of the lower reservoir at the start of monitoring, is the total water volume parameter of the lower reservoir at the end of monitoring, The water demand parameter of the power station during the monitoring period is negative when the power station is discharging water for power generation, and positive when the power station is pumping water for storage. is the precipitation parameter of the lower reservoir during the monitoring period, is the water replenishment parameter of the lower reservoir during the monitoring period, is the evaporation parameter of the lower reservoir during the monitoring period, is the additional water consumption parameter of the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0060] Optionally, the abnormal leakage phenomenon determination module includes:

[0061] a reference leakage parameter acquisition unit, configured to perform standardization processing on the first leakage loss parameter, the second leakage loss parameter, and the third leakage loss parameter, respectively, to obtain corresponding first standard leakage loss parameter, second standard leakage loss parameter, and third standard leakage loss parameter;

[0062] a first abnormal leakage determining unit, configured to determine whether there is abnormal leakage in the reservoir of the pumped storage power station based on a magnitude relationship between the first standard leakage loss parameter and a first reference leakage loss parameter corresponding to the power station system;

[0063] a second abnormal leakage determining unit, configured to determine whether there is abnormal leakage in the upper reservoir of the pumped-storage power station based on a magnitude relationship between the second standard leakage loss parameter and a second reference leakage loss parameter corresponding to the upper reservoir;

[0064] The third abnormal leakage determination unit is used to determine whether there is abnormal leakage in the lower reservoir of the pumped storage power station based on the size relationship between the third standard leakage loss parameter and the third benchmark leakage loss parameter corresponding to the lower reservoir.

[0065] Optionally, the device further comprises:

[0066] A first prompt output module is used to output abnormal leakage prompt information corresponding to the upper reservoir when there is abnormal leakage in the upper reservoir;

[0067] A second prompt output module is used to output abnormal leakage prompt information corresponding to the upper reservoir when there is abnormal leakage in the lower reservoir;

[0068] The third prompt output module is used to output abnormal leakage prompt information corresponding to the power station system when abnormal leakage occurs in the power station system.

[0069] In a third aspect, an embodiment of the present application provides an electronic device, including:

[0070] A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, any one of the above-mentioned reservoir leakage monitoring methods is implemented.

[0071] In a fourth aspect, an embodiment of the present application provides a readable storage medium. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute any of the above-mentioned reservoir leakage monitoring methods.

[0072] In an embodiment of the present application, by obtaining the first reservoir basin topographic characteristic parameters of the upper reservoir and the second reservoir basin topographic characteristic parameters of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir monitored in real time. Based on the first reservoir basin topographic characteristic parameters, the second reservoir basin topographic characteristic parameters, and the water volume change parameters of the upper reservoir and the lower reservoir, the leakage loss parameters corresponding to the upper reservoir, the lower reservoir and the power station system are calculated. The power station system is a combined system of the upper reservoir, the lower reservoir and the units connecting the upper reservoir and the lower reservoir. Based on the leakage loss parameters and the baseline leakage loss parameters, it is determined whether there is abnormal leakage in the pumped storage power station reservoir. The embodiment of the present application monitors the leakage of the pumped storage power station reservoir in real time by monitoring the water volume change parameters of the upper and lower reservoirs of the pumped storage power station in real time, thereby solving the problem that abnormal leakage in the reservoir area is difficult to be discovered, judged and warned in a timely manner through routine monitoring means and methods during normal operation of the reservoir, thereby improving the timeliness and accuracy of leakage monitoring of the power station reservoir.

[0073] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0075] Figure 1 A flow chart of the steps of a reservoir leakage monitoring method provided in an embodiment of the present application;

[0076] Figure 2 A schematic diagram of the water volume of a pumped storage power station provided in an embodiment of the present application;

[0077] Figure 3 A schematic diagram of a time interval provided in an embodiment of the present application;

[0078] Figure 4 A schematic diagram of a real-time monitoring and early warning process for abnormal leakage in a reservoir provided in an embodiment of the present application;

[0079] Figure 5 A schematic structural diagram of a reservoir leakage monitoring device provided in an embodiment of the present application;

[0080] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0081] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0082] Reference Figure 1 , shows a flow chart of the steps of a reservoir leakage monitoring method provided by an embodiment of the present application, such as Figure 1 As shown, the reservoir leakage monitoring method may include: step 101, step 102, step 103 and step 104.

[0083] Step 101: obtaining topographic characteristic parameters of a first reservoir basin of an upper reservoir and a second reservoir basin of a lower reservoir of a pumped storage power station, as well as water volume variation parameters of the upper reservoir and the lower reservoir monitored in real time.

[0084] In this embodiment, a pumped-storage power station is a hydroelectric station that pumps water to an upper reservoir for storage. It uses electricity generated during off-peak periods to pump water to the upper reservoir and releases it to the lower reservoir for power generation during peak periods. This station converts excess power generated during periods of low grid load into high-value energy during peak periods. It also features frequency and phase modulation, stabilizing the power system's frequency and voltage, making it suitable for emergency backup.

[0085] When monitoring reservoir leakage at a pumped-storage power station, the topographical parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir can be obtained. The reservoir basin topography refers to the area submerged below the reservoir's normal water level. Because the reservoir basin topography is an integral part of reservoir construction, its specific geographic characteristics and dimensions vary depending on factors such as the reservoir's location, design, and hydrological conditions.

[0086] In practice, topographical data for the upper and lower reservoir basins can be obtained through a variety of measurement methods, such as laser scanning before impoundment or multi-beam topography during operation. This is not a limitation of the present invention, but the acquired data must be sufficient to establish a three-dimensional model of the upper and lower reservoir basins and, combined with water level information, calculate the total water volume in the basins. Topographical data for the upper and lower reservoir basins does not need to be measured in real time; instead, it can be measured and updated on a monthly, quarterly, or annual basis to minimize the impact of subsequent calculations of the actual total water volume of the reservoirs due to siltation and other factors during the reservoir's long-term operation.

[0087] When conducting leakage monitoring of a pumped storage power station reservoir, the water volume change parameters of the upper and lower reservoirs can be monitored in real time.

[0088] In this embodiment, water quantity change parameters may include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters, and excess water consumption parameters. The water demand parameters may be used to indicate the amount of water transferred between the upper and lower reservoirs, and the excess water consumption parameters are parameters for non-power generation water consumption in the upper and lower reservoirs. The precipitation and evaporation parameters may be parameters indicating reservoir water quantity changes due to meteorological data.

[0089] In specific implementations, the real-time water level parameters of the upper and lower reservoirs can be obtained through a variety of measurement methods, such as deploying high-precision water level gauges at multiple locations in the reservoir area. This embodiment does not impose any restrictions on this, but it should meet the requirements that water level data can be obtained in real time and the total water volume in the reservoir basin can be calculated in combination with terrain information.

[0090] Meteorological data can be obtained from meteorological stations near the dam site. If no suitable meteorological station is available, data from a station in the project area can also be used. Meteorological data include evaporation and rainfall. Evaporation data measured by different types of evaporation pans must be converted to surface evaporation from a larger body of water. If direct evaporation data are unavailable, calculations can be made using formulas based on observed data such as temperature, humidity, wind speed, and radiation.

[0091] The water demand parameter is the water demand data of the power plant, which is determined by the dispatching and operation of the power plant and can be obtained through the monitoring data of the power plant management system. It is generally the power generation flow of the unit during the period.

[0092] The additional water consumption parameter refers to the water consumption other than the water used for power generation in the power station, including but not limited to the water used for production and living in the power station, water used for downstream ecological discharge, etc., which can be obtained through the monitoring data of the power station management system.

[0093] The water replenishment parameter refers to the amount of water added to the upper and lower reservoirs through the water replenishment facilities during operation, which can be obtained through the water replenishment system monitoring data.

[0094] The water volume change parameters can be stored according to the time history for subsequent viewing.

[0095] After obtaining the first reservoir basin topographic characteristic parameters of the upper reservoir and the second reservoir basin topographic characteristic parameters of the lower reservoir of the pumped storage power station, as well as the real-time monitored water volume change parameters of the upper reservoir and the lower reservoir, step 103 is executed.

[0096] Step 102: Based on the terrain characteristic parameters of the first reservoir basin, the terrain characteristic parameters of the second reservoir basin, and the water volume change parameters of the upper reservoir and the lower reservoir, the leakage loss parameters corresponding to the upper reservoir, the lower reservoir and the power station system are calculated. The power station system is a combined system of the upper reservoir, the lower reservoir and the units connecting the upper reservoir and the lower reservoir.

[0097] The leakage loss parameter can be used to indicate the amount of water lost by leakage per unit time (e.g., per day) in the upper and lower reservoirs and power station system of a pumped storage power station. The power station system is a combination of the upper reservoir, the lower reservoir, and the generator sets connecting the upper and lower reservoirs.

[0098] After obtaining the first reservoir basin terrain characteristic parameters of the upper reservoir and the second reservoir basin terrain characteristic parameters of the lower reservoir of the pumped storage power station, as well as the real-time monitored water volume change parameters of the upper reservoir and the lower reservoir, the leakage loss parameters corresponding to the upper reservoir, the lower reservoir and the power station system can be calculated based on the first reservoir basin terrain characteristic parameters, the second reservoir basin terrain characteristic parameters, and the water volume change parameters of the upper reservoir and the lower reservoir.

[0099] In the specific implementation, the leakage loss parameters are affected by the water replenishment and loss of the upper and lower reservoirs. The parameters affecting the water volume of the pumped storage power station can be combined with Figure 2 This is described in detail below.

[0100] like Figure 2 As shown, 1: water volume in the upper reservoir, 2: water volume in the lower reservoir, 3: evaporation of the upper reservoir, 4: evaporation of the lower reservoir, 5: precipitation in the upper reservoir, 6: precipitation in the lower reservoir, 7: water replenishment in the upper reservoir, 8: water replenishment in the lower reservoir, 9: water consumption in the upper reservoir, 10: water consumption in the lower reservoir, 11: leakage in the upper reservoir, 12: leakage in the lower reservoir, 13: water demand of the power station for discharge power generation is a negative value, 14: water demand of the pumped storage power station is a positive value.

[0101] The implementation process of calculating the leakage loss parameters can be described in detail in conjunction with the following specific implementation methods.

[0102] In a specific implementation of the present application, the above step 102 may include:

[0103] Sub-step A1: Based on the first reservoir basin terrain characteristic parameters and the second reservoir basin terrain characteristic parameters, and the water level parameters of the upper and lower reservoirs at the monitoring start time and monitoring end time in the water volume change parameters, determine the first total water volume parameters of the upper reservoir and the lower reservoir at the monitoring start time, and the second total water volume parameters of the upper reservoir and the lower reservoir at the monitoring end time; wherein the monitoring start time and the monitoring end time are respectively the start time and the end time of the preset monitoring period.

[0104] In this embodiment, the monitoring period refers to the period of leakage monitoring of the pumped storage power station reservoir. The monitoring start time is the start time of the monitoring period, and the monitoring end time is the end time of the monitoring period. Figure 3 As shown, the monitoring period can be pre-set, at the monitoring start time t i-1 and monitoring end time t i The interval between them is Δt i , Δt i This is the monitoring period.

[0105] After obtaining the first reservoir basin terrain characteristic parameters and the second reservoir basin terrain characteristic parameters of the upper reservoir, the first total water volume parameter of the upper reservoir and the lower reservoir at the start time of monitoring and the second total water volume parameter of the upper reservoir and the lower reservoir at the end time of monitoring can be determined based on the first reservoir basin terrain characteristic parameters and the second reservoir basin terrain characteristic parameters, as well as the water level parameters of the upper reservoir and the lower reservoir in the water volume change parameters at the start time of monitoring and the end time of monitoring. Specifically, the total water volume parameters of the upper and lower reservoirs at the start time of monitoring and the end time of monitoring can be calculated in combination with the first reservoir basin terrain characteristic parameters of the upper reservoir and the second reservoir basin terrain characteristic parameters of the lower reservoir, as well as the real-time water level parameters of the upper and lower reservoirs. The specific calculation formula is as follows:

[0106]

[0107] In the above formula, is the total water volume parameter of the upper reservoir and the lower reservoir at the start of monitoring, that is, the first total water volume parameter, is the total water volume parameter of the upper reservoir at the start of monitoring, is the total water volume parameter of the lower reservoir at the start of monitoring, is the total water volume parameter of the upper reservoir and the lower reservoir during the monitoring period, that is, the second total water volume parameter, is the total water volume parameter of the upper reservoir at the end of monitoring, is the total water volume parameter of the lower reservoir at the end of monitoring, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0108] The reservoir water volume parameters of the upper reservoir may be calculated based on the topography of the upper reservoir and the water level of the upper reservoir.

[0109] The reservoir water volume parameters of the lower reservoir can be calculated based on the topography of the lower reservoir and the water level of the lower reservoir.

[0110] In this embodiment, the reservoir water volume parameters can be calculated through modeling, such as describing the relationship between the surface area and water level of the reservoir through modeling, and calculating the water volume based on this model and the water level. It is understandable that calculating reservoir water volume parameters is a very common method, and any method for calculating reservoir water volume parameters in the prior art can be applied to this embodiment.

[0111] Sub-step A2: Based on the first total water volume parameter, the second total water volume parameter, and the water volume change parameters of the upper reservoir and the lower reservoir during the monitoring period, calculate the first leakage loss parameter of the power station system during the monitoring period.

[0112] After obtaining the first and second total water volume parameters, a first leakage loss parameter of the power station system during the monitoring period can be calculated based on the first and second total water volume parameters, as well as the water volume change parameters of the upper and lower reservoirs during the monitoring period. Specifically, the total water volume parameters of two adjacent time periods can be combined, and the difference in the overall water volume of the power station system after excluding the effects of water loss and water replenishment can be used to obtain the overall leakage loss of the power station system during the monitoring period, i.e., the first leakage loss parameter.

[0113] In this embodiment, the first leakage loss parameter can be calculated based on the following formula (1):

[0114]

[0115] In the above formula (1), is the first leakage loss parameter of the power station system during the monitoring period, is the first total water volume parameter of the upper reservoir and the lower reservoir at the start time of the monitoring, is the first total water volume parameter of the upper reservoir and the lower reservoir at the end of the monitoring, is the evaporation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir and the lower reservoir during the monitoring period, is the precipitation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir and the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0116] Sub-step A3: Determine the second leakage loss parameter of the upper reservoir during the monitoring period based on the water volume change parameter of the upper reservoir during the monitoring period and the total water volume parameter of the upper reservoir at the start time and the end time of the monitoring.

[0117] In this embodiment, the second leakage loss parameter of the upper reservoir during the monitoring period can be determined based on the water volume change parameter of the upper reservoir during the monitoring period. Specifically, the second leakage loss parameter can be calculated based on the following formula (2):

[0118]

[0119] In the above formula (2), is the second leakage loss parameter of the upper reservoir during the monitoring period, is the total water volume parameter of the upper reservoir at the start of monitoring, is the total water volume parameter of the upper reservoir at the end of monitoring, is the evaporation parameter of the upper reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir during the monitoring period, is the precipitation parameter of the upper reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir during the monitoring period, is the water demand parameter of the power station during the monitoring period. The water demand parameter of the power station during discharge power generation is negative, and the water demand parameter of the power station during pumped storage is positive. i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0120] Sub-step A4: Determine the third leakage loss parameter of the lower reservoir during the monitoring period based on the water volume change parameter of the lower reservoir during the monitoring period and the total water volume parameter of the lower reservoir at the monitoring start time and the monitoring end time.

[0121] In this embodiment, the third leakage loss parameter of the lower reservoir during the monitoring period can be determined based on the water volume change parameter of the lower reservoir during the monitoring period. Specifically, the third leakage loss parameter can be calculated based on the following formula (3):

[0122]

[0123] In the above formula (3), is the third leakage loss parameter of the lower reservoir during the monitoring period, is the total water volume parameter of the lower reservoir at the start of monitoring, is the total water volume parameter of the lower reservoir at the end of monitoring, The water demand parameter of the power station during the monitoring period is negative when the power station is discharging water for power generation, and positive when the power station is pumping water for storage. is the precipitation parameter of the lower reservoir during the monitoring period, is the water replenishment parameter of the lower reservoir during the monitoring period, is the evaporation parameter of the lower reservoir during the monitoring period, is the additional water consumption parameter of the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0124] In the above formula, the precipitation parameter can be calculated based on the meteorological precipitation monitoring data of the upper and lower reservoirs and the reservoir basin area, that is, precipitation = meteorological precipitation monitoring data × reservoir basin area.

[0125] Evaporation parameters can be calculated based on evaporation pan monitoring data, a conversion factor, and the reservoir area: evaporation = evaporation pan monitoring data × conversion factor × reservoir area. Evaporation = f(temperature, humidity, wind speed, radiation, reservoir area). Evaporation is calculated based on the functional relationship between temperature, humidity, wind speed, radiation, and reservoir area.

[0126] The water demand parameter is the water demand data of the power station, which is determined by the dispatching and operation of the power station and can be obtained through the monitoring data of the power station management system. It is generally the power generation flow of the unit during the period.

[0127] The additional water consumption parameter refers to the water consumption other than the water used for power generation in the power station, including but not limited to the water used for production and living in the power station, water used for downstream ecological discharge, etc., which can be obtained through the monitoring data of the power station management system.

[0128] The water replenishment parameter refers to the amount of water added to the upper and lower reservoirs through the water replenishment facilities during operation, which can be obtained through the monitoring data of the water replenishment system.

[0129] Step 103: Based on the leakage loss parameter and the reference leakage loss parameter, determine whether there is abnormal leakage in the pumped storage power station reservoir.

[0130] After calculating and obtaining the leakage loss parameter, it is possible to determine whether the pumped storage power station reservoir has abnormal leakage based on the leakage loss parameter and the reference leakage loss parameter. Specifically, after obtaining the first leakage loss parameter, the second leakage loss parameter, and the third leakage loss parameter, the first leakage loss parameter, the second leakage loss parameter, and the third leakage loss parameter can be standardized to obtain corresponding first standard leakage loss parameter, second standard leakage loss parameter, and third standard leakage loss parameter.

[0131] The leakage loss parameters can be normalized as follows:

[0132] 1. In Δt i The unit is day and time:

[0133] The standardized formula for the first leakage loss parameter is:

[0134]

[0135] The standardized formula for the second leakage loss parameter is:

[0136]

[0137] The standardized formula for the third leakage loss parameter is:

[0138]

[0139] 2. At Δt i When the unit is hours:

[0140] The standardized formula for the first leakage loss parameter is:

[0141]

[0142] The standardized formula for the second leakage loss parameter is:

[0143]

[0144] The standardized formula for the third leakage loss parameter is:

[0145]

[0146] The same applies to other time units. The subscript "d" indicates the physical quantity normalized to the day.

[0147] Include at least one of the following three situations:

[0148] 1. Based on the magnitude relationship between the first standard leakage loss parameter and the first benchmark leakage loss parameter corresponding to the power station system, determine whether there is abnormal leakage in the pumped storage power station reservoir.

[0149] 2. Based on the relationship between the second standard leakage loss parameter and the second benchmark leakage loss parameter corresponding to the upper reservoir, determine whether there is abnormal leakage in the upper reservoir of the pumped storage power station.

[0150] 3. Based on the relationship between the third standard leakage loss parameter and the third benchmark leakage loss parameter corresponding to the lower reservoir, determine whether there is abnormal leakage in the lower reservoir of the pumped storage power station.

[0151] In a specific implementation, after obtaining the overall leakage of the power station system or the leakage of the upper reservoir or the leakage parameter of the lower reservoir, it can be standardized into daily leakage (the standardization method is to divide the leakage within a certain time interval obtained by analysis by the corresponding time interval in units of days) and compared with the allowable daily leakage of the reservoir (i.e., the benchmark leakage loss parameter). In this example, when the first leakage loss parameter is greater than the first benchmark leakage loss parameter, it indicates that there is abnormal leakage in the power station system. When the second leakage loss parameter is greater than the second benchmark leakage loss parameter, it indicates that there is abnormal leakage in the upper reservoir. When the third leakage loss parameter is greater than the third benchmark leakage loss parameter, it indicates that there is abnormal leakage in the lower reservoir. The judgment formula for abnormal leakage of the pumped storage power station reservoir is as follows:

[0152]

[0153] and / or

[0154]

[0155] and / or

[0156]

[0157] Among them, V 允,d 、V 上-允,d and V 下-允,d They represent the first reference leakage loss parameter, the second reference leakage loss parameter and the third reference leakage loss parameter respectively.

[0158] In practical applications, the allowable daily leakage of the reservoir may be the leakage requirement set by the power station itself, or the leakage requirement in relevant specifications, etc. This embodiment does not limit the setting method of the allowable daily leakage of the reservoir.

[0159] In this embodiment, when there is abnormal leakage in the upper reservoir, the abnormal leakage prompt information corresponding to the upper reservoir can be output, and / or when there is abnormal leakage in the lower reservoir, the abnormal leakage prompt information corresponding to the upper reservoir can be output; when there is abnormal leakage in the power station system, the abnormal leakage prompt information corresponding to the power station system can be output.

[0160] This application can issue an alarm in time when abnormal leakage occurs in the reservoir, notifying relevant personnel to conduct leakage investigation and repair.

[0161] Next, combine Figure 4 The monitoring and early warning process of abnormal reservoir leakage is described in detail.

[0162] like Figure 4 As shown, the monitoring and early warning process for abnormal leakage of the reservoir can include:

[0163] 1. Obtain real-time water level data of the upper and lower reservoirs, real-time meteorological data within the upper and lower reservoir areas, real-time water demand data of power station operation, real-time data of other water consumption, and water replenishment data.

[0164] 2. Obtain topographical characteristic data of the upper and lower reservoir basins, which can be updated on a monthly, quarterly or annual basis.

[0165] 3. Define time intervals, i.e., monitoring periods, and analyze the above data obtained in adjacent time intervals to determine the water volume information of the power station system as a whole and the upper and lower reservoirs.

[0166] 4. Analyze the water volume information of the power station system as a whole and the upper and lower reservoirs during the time period to obtain the water leakage volume of the power station system as a whole and the upper and lower reservoirs during the time period.

[0167] 5. Compare with the allowable leakage volume of the reservoir to determine whether abnormal leakage occurs in the reservoir during this time period.

[0168] 6. If there is any abnormality, an early warning will be issued to remind maintenance personnel to carry out reservoir leakage maintenance in time, and then monitoring can continue.

[0169] 7. If there is no abnormality, continue leakage monitoring.

[0170] The embodiments of the present application can provide real-time monitoring and early warning of abnormal leakage during normal reservoir operation. This method eliminates the need to drain the reservoir for leak detection, ensuring the normal operation of the power station. The required data are all commonly monitored during normal power station operation, making it easy to use, simple to operate, and economical. The method and system enable routine monitoring, enabling timely detection of problems and early warning, with high immediacy.

[0171] The reservoir leakage monitoring method provided in the embodiment of the present application obtains the first reservoir basin topographic characteristic parameters of the upper reservoir and the second reservoir basin topographic characteristic parameters of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir monitored in real time. Based on the first reservoir basin topographic characteristic parameters, the second reservoir basin topographic characteristic parameters, and the water volume change parameters of the upper reservoir and the lower reservoir, the leakage loss parameters corresponding to the upper reservoir, the lower reservoir and the power station system are calculated. The power station system is a combination system of the upper reservoir, the lower reservoir and the unit connecting the upper reservoir and the lower reservoir. Based on the leakage loss parameters and the baseline leakage loss parameters, it is determined whether there is abnormal leakage in the pumped storage power station reservoir. The embodiment of the present application monitors the leakage of the pumped storage power station reservoir in real time by monitoring the water volume change parameters of the upper and lower reservoirs of the pumped storage power station in real time, thereby solving the problem that abnormal leakage in the reservoir area is difficult to be discovered, judged and warned in a timely manner through routine monitoring means and methods during normal operation of the reservoir, thereby improving the timeliness and accuracy of leakage monitoring of the power station reservoir.

[0172] Reference Figure 5 , shows a schematic structural diagram of a reservoir leakage monitoring device provided by an embodiment of the present application. Figure 5 As shown, the reservoir leakage monitoring device 500 may include the following modules:

[0173] A water volume change parameter acquisition module 510 is configured to acquire topographic characteristic parameters of a first reservoir basin of an upper reservoir and a second reservoir basin of a lower reservoir of a pumped storage power station, as well as water volume change parameters of the upper reservoir and the lower reservoir monitored in real time;

[0174] a leakage loss parameter calculation module 520 for calculating leakage loss parameters corresponding to the upper reservoir, the lower reservoir, and the power station system, respectively, based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameters of the upper reservoir and the lower reservoir. The power station system is a combination of the upper reservoir, the lower reservoir, and the generator set connecting the upper reservoir and the lower reservoir.

[0175] The abnormal leakage phenomenon determination module 530 is used to determine whether there is abnormal leakage in the pumped storage power station reservoir based on the leakage loss parameter and the reference leakage loss parameter.

[0176] Optionally, the leakage loss parameter calculation module includes:

[0177] a total water volume parameter determination unit, configured to determine a first total water volume parameter of the upper reservoir and the lower reservoir at the monitoring start time and a second total water volume parameter of the upper reservoir and the lower reservoir at the monitoring end time based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at the monitoring start time and the monitoring end time in the water volume change parameter; wherein the monitoring start time and the monitoring end time are the start time and the end time of a preset monitoring period, respectively;

[0178] a first leakage loss calculation unit, configured to calculate a first leakage loss parameter of the power station system during the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir, respectively, during the monitoring period;

[0179] A second leakage loss calculation unit is configured to determine a second leakage loss parameter of the upper reservoir within the monitoring period based on a water volume change parameter of the upper reservoir within the monitoring period and a total water volume parameter of the upper reservoir at the monitoring start time and the monitoring end time;

[0180] The third leakage loss calculation unit is used to determine the third leakage loss parameter of the lower reservoir during the monitoring period based on the water volume change parameter of the lower reservoir during the monitoring period and the total water volume parameter of the lower reservoir at the start time and the end time of the monitoring.

[0181] Optionally, the water volume change parameters include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters are used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters are parameters of non-power generation water consumption of the upper reservoir and the lower reservoir.

[0182] Optionally, the first leakage loss calculation unit includes:

[0183] The first leakage loss parameter is calculated based on the following formula (1):

[0184]

[0185] In the above formula (1), is the first leakage loss parameter of the power station system during the monitoring period, is the first total water volume parameter of the upper reservoir and the lower reservoir at the start time of the monitoring, is the first total water volume parameter of the upper reservoir and the lower reservoir at the end of the monitoring, is the evaporation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir and the lower reservoir during the monitoring period, is the precipitation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir and the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0186] Optionally, the second leakage loss calculation unit includes:

[0187] The second leakage loss parameter is calculated based on the following formula (2):

[0188]

[0189] In the above formula (2), is the second leakage loss parameter of the upper reservoir during the monitoring period, is the total water volume parameter of the upper reservoir at the start of monitoring, is the total water volume parameter of the upper reservoir at the end of monitoring, is the evaporation parameter of the upper reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir during the monitoring period, is the precipitation parameter of the upper reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir during the monitoring period, is the water demand parameter of the power station during the monitoring period. The water demand parameter of the power station during discharge power generation is negative, and the water demand parameter of the power station during pumped storage is positive. i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0190] Optionally, the third leakage loss calculation unit includes:

[0191] The third leakage loss parameter is calculated based on the following formula (3):

[0192]

[0193] In the above formula (3), is the third leakage loss parameter of the lower reservoir during the monitoring period, is the total water volume parameter of the lower reservoir at the start of monitoring, is the total water volume parameter of the lower reservoir at the end of monitoring, The water demand parameter of the power station during the monitoring period is negative when the power station is discharging water for power generation, and positive when the power station is pumping water for storage. is the precipitation parameter of the lower reservoir during the monitoring period, is the water replenishment parameter of the lower reservoir during the monitoring period, is the evaporation parameter of the lower reservoir during the monitoring period, is the additional water consumption parameter of the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

[0194] Optionally, the abnormal leakage phenomenon determination module includes:

[0195] a reference leakage parameter acquisition unit, configured to perform standardization processing on the first leakage loss parameter, the second leakage loss parameter, and the third leakage loss parameter, respectively, to obtain corresponding first standard leakage loss parameter, second standard leakage loss parameter, and third standard leakage loss parameter;

[0196] a first abnormal leakage determining unit, configured to determine whether there is abnormal leakage in the reservoir of the pumped storage power station based on a magnitude relationship between the first standard leakage loss parameter and a first reference leakage loss parameter corresponding to the power station system;

[0197] a second abnormal leakage determining unit, configured to determine whether there is abnormal leakage in the upper reservoir of the pumped-storage power station based on a magnitude relationship between the second standard leakage loss parameter and a second reference leakage loss parameter corresponding to the upper reservoir;

[0198] The third abnormal leakage determination unit is used to determine whether there is abnormal leakage in the lower reservoir of the pumped storage power station based on the size relationship between the third standard leakage loss parameter and the third benchmark leakage loss parameter corresponding to the lower reservoir.

[0199] Optionally, the device further comprises:

[0200] A first prompt output module is used to output abnormal leakage prompt information corresponding to the upper reservoir when there is abnormal leakage in the upper reservoir;

[0201] A second prompt output module is used to output abnormal leakage prompt information corresponding to the upper reservoir when there is abnormal leakage in the lower reservoir;

[0202] The third prompt output module is used to output abnormal leakage prompt information corresponding to the power station system when abnormal leakage occurs in the power station system.

[0203] The reservoir leakage monitoring device provided in the embodiment of the present application obtains the first reservoir basin topographic characteristic parameters of the upper reservoir and the second reservoir basin topographic characteristic parameters of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir monitored in real time. Based on the first reservoir basin topographic characteristic parameters, the second reservoir basin topographic characteristic parameters, and the water volume change parameters of the upper reservoir and the lower reservoir, the leakage loss parameters corresponding to the upper reservoir, the lower reservoir and the power station system are calculated. The power station system is a combination system of the upper reservoir, the lower reservoir and the units connecting the upper reservoir and the lower reservoir. Based on the leakage loss parameters and the baseline leakage loss parameters, it is determined whether there is abnormal leakage in the pumped storage power station reservoir. The embodiment of the present application monitors the leakage of the pumped storage power station reservoir in real time by monitoring the water volume change parameters of the upper and lower reservoirs of the pumped storage power station in real time, thereby solving the problem that abnormal leakage in the reservoir area is difficult to detect, judge and warn in a timely manner through routine monitoring means and methods during normal operation of the reservoir, thereby improving the timeliness and accuracy of leakage monitoring of the power station reservoir.

[0204] In addition, an embodiment of the present application also provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the above-mentioned reservoir leakage monitoring method when executed by the processor.

[0205] Figure 6 FIG. 6 is a schematic structural diagram of an electronic device 600 according to an embodiment of the present invention. Figure 6 As shown, electronic device 600 includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) 602 or computer program instructions loaded from a storage unit 608 into a random access memory (RAM) 603. Various programs and data required for the operation of electronic device 600 can also be stored in RAM 603. CPU 601, ROM 602, and RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to bus 604.

[0206] Multiple components in the electronic device 600 are connected to the I / O interface 605, including an input unit 606, such as a keyboard, a mouse, a microphone, etc.; an output unit 607, such as various types of displays, speakers, etc.; a storage unit 608, such as a magnetic disk, an optical disk, etc.; and a communication unit 609, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 609 allows the electronic device 600 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0207] The various processes and processing described above may be performed by the processing unit 601. For example, the method of any of the above embodiments may be implemented as a computer software program, which is tangibly contained in a computer-readable medium, such as the storage unit 608. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 600 via the ROM 602 and / or the communication unit 609. When the computer program is loaded into the RAM 603 and executed by the CPU 601, one or more actions in the method described above may be performed.

[0208] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the various processes of the above-mentioned reservoir leakage monitoring method embodiment are implemented, and the same technical effects are achieved. To avoid repetition, the details are not described here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0209] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0210] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0211] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

[0212] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the embodiments of this application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0213] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0214] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0215] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0216] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0217] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0218] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for monitoring reservoir leakage, characterized in that: The method comprises: Obtaining topographic characteristic parameters of a first reservoir basin of an upper reservoir and a second reservoir basin of a lower reservoir of a pumped storage power station, as well as water volume change parameters of the upper reservoir and the lower reservoir monitored in real time; Based on the terrain characteristic parameters of the first reservoir basin, the terrain characteristic parameters of the second reservoir basin, and the water volume change parameters of the upper reservoir and the lower reservoir, leakage loss parameters corresponding to the upper reservoir, the lower reservoir, and the power station system are calculated, where the power station system is a combination of the upper reservoir, the lower reservoir, and the units connecting the upper reservoir and the lower reservoir; Determining whether there is abnormal leakage in the pumped storage power station reservoir based on the leakage loss parameter and the benchmark leakage loss parameter; The method of calculating leakage loss parameters corresponding to the upper reservoir, the lower reservoir, and the power station system based on the first reservoir basin topographic characteristic parameters, the second reservoir basin topographic characteristic parameters, and the water volume change parameters of the upper reservoir and the lower reservoir includes: Determine, based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at the monitoring start time and the monitoring end time in the water volume change parameter, a first total water volume parameter of the upper reservoir and the lower reservoir at the monitoring start time, and a second total water volume parameter of the upper reservoir and the lower reservoir at the monitoring end time; wherein the monitoring start time and the monitoring end time are the start time and the end time of a preset monitoring period, respectively; Calculating a first leakage loss parameter of the power station system during the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir during the monitoring period; Determining a second leakage loss parameter of the upper reservoir during the monitoring period based on a water volume change parameter of the upper reservoir during the monitoring period and a total water volume parameter of the upper reservoir at the monitoring start time and the monitoring end time; Based on the water volume change parameter of the lower reservoir during the monitoring period and the total water volume parameter of the lower reservoir at the monitoring start time and the monitoring end time, the third leakage loss parameter of the lower reservoir during the monitoring period is determined.

2. The method according to claim 1, characterized in that The water volume change parameters include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters are used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters are parameters of non-power generation water consumption of the upper reservoir and the lower reservoir.

3. The method according to claim 2, characterized in that The calculating of a first leakage loss parameter of the power station system within the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir within the monitoring period, includes: The first leakage loss parameter is calculated based on the following formula (1): In the above formula (1), is the first leakage loss parameter of the power station system during the monitoring period, is the first total water volume parameter of the upper reservoir and the lower reservoir at the start time of the monitoring, is the first total water volume parameter of the upper reservoir and the lower reservoir at the end of the monitoring, is the evaporation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir and the lower reservoir during the monitoring period, is the precipitation parameter of the upper reservoir and the lower reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir and the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

4. The method according to claim 2, characterized in that The determining of the second leakage loss parameter of the upper reservoir within the monitoring period based on the water volume change parameter of the upper reservoir within the monitoring period and the total water volume parameter of the upper reservoir at the monitoring start time and the monitoring end time includes: The second leakage loss parameter is calculated based on the following formula (2): In the above formula (2), is the second leakage loss parameter of the upper reservoir during the monitoring period, is the total water volume parameter of the upper reservoir at the start of monitoring, is the total water volume parameter of the upper reservoir at the end of monitoring, is the evaporation parameter of the upper reservoir during the monitoring period, is the additional water consumption parameter of the upper reservoir during the monitoring period, is the precipitation parameter of the upper reservoir during the monitoring period, is the water replenishment parameter of the upper reservoir during the monitoring period, is the water demand parameter of the power station during the monitoring period. The water demand parameter of the power station during discharge power generation is negative, and the water demand parameter of the power station during pumped storage is positive. i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

5. The method according to claim 2, characterized in that The determining of the third leakage loss parameter of the lower reservoir during the monitoring period based on the water volume change parameter of the lower reservoir during the monitoring period and the total water volume parameter of the lower reservoir at the monitoring start time and the monitoring end time includes: The third leakage loss parameter is calculated based on the following formula (3): In the above formula (3), is the third leakage loss parameter of the lower reservoir during the monitoring period, is the total water volume parameter of the lower reservoir at the start of monitoring, is the total water volume parameter of the lower reservoir at the end of monitoring, The water demand parameter of the power station during the monitoring period is negative when the power station is discharging water for power generation, and positive when the power station is pumping water for storage. is the precipitation parameter of the lower reservoir during the monitoring period, is the water replenishment parameter of the lower reservoir during the monitoring period, is the evaporation parameter of the lower reservoir during the monitoring period, is the additional water consumption parameter of the lower reservoir during the monitoring period, Δt i is the monitoring period, t i-1 is the monitoring start time, t i The monitoring end time.

6. The method according to claim 1, characterized in that The determining whether there is abnormal leakage in the pumped storage power station reservoir based on the leakage loss parameter and the benchmark leakage loss parameter includes: performing standardization processing on the first leakage loss parameter, the second leakage loss parameter, and the third leakage loss parameter respectively to obtain corresponding first standard leakage loss parameter, second standard leakage loss parameter, and third standard leakage loss parameter; determining whether there is abnormal leakage in the pumped storage power station reservoir based on a magnitude relationship between the first standard leakage loss parameter and a first reference leakage loss parameter corresponding to the power station system; and / or determining whether there is abnormal leakage in the upper reservoir of the pumped-storage power station based on a magnitude relationship between the second standard leakage loss parameter and a second benchmark leakage loss parameter corresponding to the upper reservoir; and / or Based on the magnitude relationship between the third standard leakage loss parameter and the third reference leakage loss parameter corresponding to the lower reservoir, it is determined whether there is abnormal leakage in the lower reservoir of the pumped storage power station.

7. The method according to claim 1, characterized in that After determining whether there is abnormal leakage in the pumped storage power station reservoir based on the leakage loss parameter and the benchmark leakage loss parameter, the method further includes: In the event of abnormal leakage in the upper reservoir, outputting abnormal leakage prompt information corresponding to the upper reservoir; and / or When there is abnormal leakage in the lower reservoir, outputting abnormal leakage prompt information corresponding to the upper reservoir; and / or In the case that abnormal leakage occurs in the power station system, abnormal leakage prompt information corresponding to the power station system is output.

8. A monitoring device for reservoir leakage in a pumped storage power station, characterized in that: The device comprises: A water volume change parameter acquisition module is used to obtain the topographic characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir monitored in real time; a leakage loss parameter calculation module, configured to calculate leakage loss parameters corresponding to the upper reservoir, the lower reservoir, and the power station system, respectively, based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameters of the upper reservoir and the lower reservoir, wherein the power station system is a combination of the upper reservoir, the lower reservoir, and a generator set connecting the upper reservoir and the lower reservoir; an abnormal leakage phenomenon determination module, configured to determine whether there is abnormal leakage in the reservoir of the pumped storage power station based on the leakage loss parameter and the reference leakage loss parameter; The leakage loss parameter calculation module includes: a total water volume parameter determination unit, configured to determine a first total water volume parameter of the upper reservoir and the lower reservoir at the monitoring start time and a second total water volume parameter of the upper reservoir and the lower reservoir at the monitoring end time based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at the monitoring start time and the monitoring end time in the water volume change parameter; wherein the monitoring start time and the monitoring end time are the start time and the end time of a preset monitoring period, respectively; a first leakage loss calculation unit, configured to calculate a first leakage loss parameter of the power station system during the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir, respectively, during the monitoring period; A second leakage loss calculation unit is configured to determine a second leakage loss parameter of the upper reservoir within the monitoring period based on a water volume change parameter of the upper reservoir within the monitoring period and a total water volume parameter of the upper reservoir at the monitoring start time and the monitoring end time; The third leakage loss calculation unit is used to determine the third leakage loss parameter of the lower reservoir during the monitoring period based on the water volume change parameter of the lower reservoir during the monitoring period and the total water volume parameter of the lower reservoir at the start time and the end time of the monitoring.

9. An electronic device, characterized in that: include: The memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the reservoir leakage monitoring method according to any one of claims 1 to 7 by executing corresponding computer instructions.

10. A readable storage medium, characterized in that: Computer instructions are stored, which are used to enable a computer to execute the reservoir leakage monitoring method according to any one of claims 1 to 7.

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